1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
4 //
5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6 // Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7 //
8
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <sound/core.h>
12 #include <sound/pcm.h>
13 #include <sound/pcm_params.h>
14 #include <sound/soc.h>
15 #include <sound/soc-acpi.h>
16 #include "../../../codecs/nau8825.h"
17
18 #define SKL_NUVOTON_CODEC_DAI "nau8825-hifi"
19 #define SKL_SSM_CODEC_DAI "ssm4567-hifi"
20
21 static struct snd_soc_codec_conf card_codec_conf[] = {
22 {
23 .dlc = COMP_CODEC_CONF("i2c-INT343B:00"),
24 .name_prefix = "Left",
25 },
26 {
27 .dlc = COMP_CODEC_CONF("i2c-INT343B:01"),
28 .name_prefix = "Right",
29 },
30 };
31
32 static const struct snd_kcontrol_new card_controls[] = {
33 SOC_DAPM_PIN_SWITCH("Left Speaker"),
34 SOC_DAPM_PIN_SWITCH("Right Speaker"),
35 };
36
37 static int
platform_clock_control(struct snd_soc_dapm_widget * w,struct snd_kcontrol * control,int event)38 platform_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event)
39 {
40 struct snd_soc_dapm_context *dapm = w->dapm;
41 struct snd_soc_card *card = dapm->card;
42 struct snd_soc_dai *codec_dai;
43 int ret;
44
45 codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
46 if (!codec_dai) {
47 dev_err(card->dev, "Codec dai not found\n");
48 return -EINVAL;
49 }
50
51 if (SND_SOC_DAPM_EVENT_ON(event)) {
52 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_MCLK, 24000000,
53 SND_SOC_CLOCK_IN);
54 if (ret < 0)
55 dev_err(card->dev, "set sysclk err = %d\n", ret);
56 } else {
57 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN);
58 if (ret < 0)
59 dev_err(card->dev, "set sysclk err = %d\n", ret);
60 }
61
62 return ret;
63 }
64
65 static const struct snd_soc_dapm_widget card_widgets[] = {
66 SND_SOC_DAPM_SPK("Left Speaker", NULL),
67 SND_SOC_DAPM_SPK("Right Speaker", NULL),
68 SND_SOC_DAPM_SPK("DP1", NULL),
69 SND_SOC_DAPM_SPK("DP2", NULL),
70 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, platform_clock_control,
71 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
72 };
73
74 static const struct snd_soc_dapm_route card_base_routes[] = {
75 {"Left Speaker", NULL, "Left OUT"},
76 {"Right Speaker", NULL, "Right OUT"},
77 };
78
avs_ssm4567_codec_init(struct snd_soc_pcm_runtime * runtime)79 static int avs_ssm4567_codec_init(struct snd_soc_pcm_runtime *runtime)
80 {
81 int ret;
82
83 /* Slot 1 for left */
84 ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(runtime, 0), 0x01, 0x01, 2, 48);
85 if (ret < 0)
86 return ret;
87
88 /* Slot 2 for right */
89 ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(runtime, 1), 0x02, 0x02, 2, 48);
90 if (ret < 0)
91 return ret;
92
93 return 0;
94 }
95
96 static int
avs_ssm4567_be_fixup(struct snd_soc_pcm_runtime * runrime,struct snd_pcm_hw_params * params)97 avs_ssm4567_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params)
98 {
99 struct snd_interval *rate, *channels;
100 struct snd_mask *fmt;
101
102 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
103 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
104 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
105
106 /* The ADSP will convert the FE rate to 48k, stereo */
107 rate->min = rate->max = 48000;
108 channels->min = channels->max = 2;
109
110 /* set SSP0 to 24 bit */
111 snd_mask_none(fmt);
112 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
113 return 0;
114 }
115
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,struct snd_soc_dai_link ** dai_link)116 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
117 struct snd_soc_dai_link **dai_link)
118 {
119 struct snd_soc_dai_link_component *platform;
120 struct snd_soc_dai_link *dl;
121
122 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
123 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
124 if (!dl || !platform)
125 return -ENOMEM;
126
127 platform->name = platform_name;
128
129 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
130 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
131 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL);
132 if (!dl->name || !dl->cpus || !dl->codecs)
133 return -ENOMEM;
134
135 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
136 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT343B:00");
137 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, "ssm4567-hifi");
138 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT343B:01");
139 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, "ssm4567-hifi");
140 if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||
141 !dl->codecs[1].name || !dl->codecs[1].dai_name)
142 return -ENOMEM;
143
144 dl->num_cpus = 1;
145 dl->num_codecs = 2;
146 dl->platforms = platform;
147 dl->num_platforms = 1;
148 dl->id = 0;
149 dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_CBS_CFS;
150 dl->init = avs_ssm4567_codec_init;
151 dl->be_hw_params_fixup = avs_ssm4567_be_fixup;
152 dl->nonatomic = 1;
153 dl->no_pcm = 1;
154 dl->dpcm_capture = 1;
155 dl->dpcm_playback = 1;
156 dl->ignore_pmdown_time = 1;
157
158 *dai_link = dl;
159
160 return 0;
161 }
162
avs_create_dapm_routes(struct device * dev,int ssp_port,struct snd_soc_dapm_route ** routes,int * num_routes)163 static int avs_create_dapm_routes(struct device *dev, int ssp_port,
164 struct snd_soc_dapm_route **routes, int *num_routes)
165 {
166 struct snd_soc_dapm_route *dr;
167 const int num_base = ARRAY_SIZE(card_base_routes);
168 const int num_dr = num_base + 4;
169 int idx;
170
171 dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL);
172 if (!dr)
173 return -ENOMEM;
174
175 memcpy(dr, card_base_routes, num_base * sizeof(*dr));
176
177 idx = num_base;
178 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Left Playback");
179 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
180 if (!dr[idx].sink || !dr[idx].source)
181 return -ENOMEM;
182
183 idx++;
184 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Right Playback");
185 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
186 if (!dr[idx].sink || !dr[idx].source)
187 return -ENOMEM;
188
189 idx++;
190 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Rx", ssp_port);
191 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "Left Capture Sense");
192 if (!dr[idx].sink || !dr[idx].source)
193 return -ENOMEM;
194
195 idx++;
196 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Rx", ssp_port);
197 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "Right Capture Sense");
198 if (!dr[idx].sink || !dr[idx].source)
199 return -ENOMEM;
200
201 *routes = dr;
202 *num_routes = num_dr;
203
204 return 0;
205 }
206
avs_ssm4567_probe(struct platform_device * pdev)207 static int avs_ssm4567_probe(struct platform_device *pdev)
208 {
209 struct snd_soc_dapm_route *routes;
210 struct snd_soc_dai_link *dai_link;
211 struct snd_soc_acpi_mach *mach;
212 struct snd_soc_card *card;
213 struct device *dev = &pdev->dev;
214 const char *pname;
215 int num_routes, ssp_port, ret;
216
217 mach = dev_get_platdata(dev);
218 pname = mach->mach_params.platform;
219 ssp_port = __ffs(mach->mach_params.i2s_link_mask);
220
221 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
222 if (ret) {
223 dev_err(dev, "Failed to create dai link: %d", ret);
224 return ret;
225 }
226
227 ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes);
228 if (ret) {
229 dev_err(dev, "Failed to create dapm routes: %d", ret);
230 return ret;
231 }
232
233 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
234 if (!card)
235 return -ENOMEM;
236
237 card->name = "avs_ssm4567-adi";
238 card->dev = dev;
239 card->owner = THIS_MODULE;
240 card->dai_link = dai_link;
241 card->num_links = 1;
242 card->codec_conf = card_codec_conf;
243 card->num_configs = ARRAY_SIZE(card_codec_conf);
244 card->controls = card_controls;
245 card->num_controls = ARRAY_SIZE(card_controls);
246 card->dapm_widgets = card_widgets;
247 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
248 card->dapm_routes = routes;
249 card->num_dapm_routes = num_routes;
250 card->fully_routed = true;
251 card->disable_route_checks = true;
252
253 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
254 if (ret)
255 return ret;
256
257 return devm_snd_soc_register_card(dev, card);
258 }
259
260 static struct platform_driver avs_ssm4567_driver = {
261 .probe = avs_ssm4567_probe,
262 .driver = {
263 .name = "avs_ssm4567",
264 .pm = &snd_soc_pm_ops,
265 },
266 };
267
268 module_platform_driver(avs_ssm4567_driver)
269
270 MODULE_LICENSE("GPL");
271 MODULE_ALIAS("platform:avs_ssm4567");
272